Damper structure



Aug. 22, 1939. T. A. MIFSBACH ET AL 2,170,726

DAMPER STRUCTURE Filed May 17, 1938 26 le/z QwuQ/MDM 72/0/VAJ A. Mae/4 6/1, 57/7/1770 0. /-/4/7/- 0/\4 Patented Aug. 22, 1939 PATENT OFFICE amaze DAMPER STRUCTURE Thomas A. Misbach and Stratton 0. Ham non, Louisville, Ky.

Application May 17, 1938, Serial No. 208,454

4 Claims. (01. 126-288) This invention relates to a fire place and flue damper structure, but it is to be understood that a damper structure, in accordance with this invention is for employment in any connection for which it may be found applicable.

The object of the invention is to provide, in a manner as hereinafter set forth, a damper structure capable of being selectively disposed in a manner whereby it will function to automatically close or to automatically open.

Further objects of the invention are to provide, in a manner as hereinafter set forth, a damper structure which is simple in its construction,

strong, durable, compact, readily installed, thor-. oughly efiicient in its use, and inexpensive to manufacture.

Embodying the objects aforesaid and to others which may hereinafter appear, the invention consists of the novel construction, combination and arrangement of parts as will be more specifically referred to and illustrated in the accompanying drawing, wherein are shown embodiments of the invention, but it is to be understood that changes, variations and modifications may be resorted to which fall Within the scope of the invention as claimed.

In the drawing:

Figure 1 is a top plan view of a damper structure, in accordance with this invention of the automatically closing type,

Figure 2 is a section on line 2-2, Figure 1,

Figure 3 is a fragmentary detail in elevation, and

Figure 4 is a sectional elevation of a fire place and its flue showing the adaptation therewith of a damper structure in accordance with this invention.

With reference to Figures 1 and 2 of the drawing there is shown a damper structure 9 of the normally closed type including a mounting I0 for pivotally supporting a normally closed overbalanced damper member II, and a pull element I2 for opening the member I I against its overbalancing characteristic.

The mounting III consists of a flat frame I3 of substantially square contour having rounded corners I4, a segmental shaped stop I5 centrally of, integral with, and extended laterally from the inner surface of one side of the frame I3, and a vertical flange I6 corresponding in contour to and integral with the inner marginal portion of the upper face of the sides of the frame I3. The upper face of stop I5 is flush with the upper face of frame I3. The inner surface of flange I6 is flush with the inner surface of frame I3. The

width of the body of frame I3 and the height of the body of flange I6 are as desired. That side of the frame I3-provided with the stop I5 is indicated at I1. The side portions of the flange I6 are designated I8, I9, 28 and 2|. The flange side portions I8, I 9 align. The flange side portions 20, 2I align. The flange side portion between its transverse median and flange side portion I9 is formed with an opening 22. The flange side portion 2I between its transverse median and the flange side portion I9 is formed with a U- shaped cut-out 23 opening at the top surface thereof. The opening 22 and cut-out 23 align.

The damper member I I is in the form of a plate 24 of substantially square contour having rounded corners 25 and conforms in contour to the inner surfaces of said frame I3 and flange I6. The plate 24 is of uniform thickness throughout and has integral with a pair of the aligned side surfaces 25*, 26 thereof oppositely extending pivots or axles 21, 28 respectively. The other pair of side surfaces of plate 24 are indicated at 29, 30. The pivots 21, 28 are arranged on the side surfaces 25, 26 respectively between the transverse medians of these latter and the plate side surface 30.

tively in the opening 22 and cut-out 23. The

position of the pivots 21, 28 relative to the plate 24 provides the latter with an inherent overbalancing portion 3| between pivots 21, 28 and flange side portion I8 and a balanced portion 32 between the pivots 21, 28 and the flange side portion III. The overbalancing portion 3| acts to normally close member II. The overbalancing movement of the plate portion 3I is arrested by the stop I5 as the latter is arranged on frame I3 below the opening 22 and cut-out 23. The portion 32 is formed with an opening 33, which when member II is closed horizontally aligns with transverse median of the stop I5. The opening 33 is intersected by the lengthwise median of the plate 24. The thickness of plate 24 is materially less than the height of flange I6.

The pull element I2 consists of a rivet 34 extending through opening 33 having its upper end upset as at 35 and its lower end formed with an eye 36. Attached to the eye 36 is the upper end of a chain 31. The latter at its lower end has connected thereto a handle piece in the form of a ring 38.

With' reference to Figure 4 there is shown the installation of a damper structure 9, in accordance with this invention with respect to a fire place III and the terra cotta flue lining I3 of the latter. The body part of structure 9 has seated there- The pivots 21, 28 are mounted respecthat of the mounting, and said pivots being dison the flue lining 13. The flange on the said body part extends upwardly into the flue. The structure 9 is shown with the damper member I I open and the direction of the opening movement of the latter is indicated by dotted lines. The member H is shifted to the position shown by pulling downwardly element l2, and when the latter is released member I automatically moves to closed position.

When the pull element is manually lowered to the desired extent a link of the chain thereof is to be latched to any suitable means for the purpose of holding the damper member in the position to which it has been adjusted. When the overbalancing portion of the normally closed damper structure is in open position, it automatically moves to closed position when the pull element is released. When the ov-erbalancing portion of the normally open damper structure is in closed position, it automatically moves to open position when the pull element is released.

What we claim is:

1. In a damper structure, a mounting formed of a flat body part of frame-like form and a vertical flange integral with the upper face of and corresponding in contour to that of the frame, a damper member arranged within said flange and formed with an overbalancing portion movable in opposite directions and with its movement in one direction being automatic, said member being provided with oppositely extending pivots loosely mounted in spaced aligned portions of said flange, a pull element for and connected to said member, said mounting and member having coacting portions for limiting the extent of the automatic movement of said overbalancing portion, said pull element providing for manually moving said overloalancing portion in the other direction of its movement, said mounting being of square contour, said member corresponding in contour to posed in eccentric relation with respect to said member.

2. In a damper structure, a mounting formed frame, a damper member arranged ithin said flange and formed with an overloalancing portion,

movable in opposite directions and with its movement in one direction being automatic, said member being provided with oppositely extending pivots loosely mounted in spaced aligned portions of said flange, a pull element for and connected to said member, said mounting being formed with a stop disposed on the inner surface of said body part and arranged in the path of said overbalancing portion for limiting the extent of the automatic movement of such portion, and said pull element providing for manually moving said overbalancing portion in the other direction of its movement.

3. In a damper structure, a mounting formed of a flat body part of frame-like form and a vertical flange integral with the upper face of and corresponding in contour to that of the frame, a damper member arranged within said flange and formed with an overbalancing portion movable in opposite directions and with its movement in one direction being automatic, said member being provided with oppositely extending pivots loosely mounted in spaced aligned portions of said flange, a pull element for and connected to said member, said mounting being formed with a lateral stop disposed on the upper end of the inner face of said flange and having its lower face arranged in the path of said overbalancing portion for limiting the extent of the automatic movement of said portion, and said pull element providing for manually moving said overbalancing portion in the other direction of its movement.

4. In a damper structure, a mounting formed of a body part of frame-like form and square contour and an upstanding flange corresponding in contour to and integral with the inner marginal portion of the upper surface of said body part, a damper member of square contour arranged within said flange, oppositely extending pivots disposed in eccentric relation with respect to a pair of opposed sides of said member and loosely mounted in said flange at aligned portions thereof, a lateral stop integral with the inner surface and centrally of one side of said body part and arranged below said pivots and a pull element connected to said member.

THOMAS A. MISBACH. STRATTON O. HAMMON. 

